./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/float-benchs/interpolation2.c.p+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187fa5d8-0aed-4882-82be-9796813a4fad/bin/ukojak-verify-1t5iHCbJaC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187fa5d8-0aed-4882-82be-9796813a4fad/bin/ukojak-verify-1t5iHCbJaC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187fa5d8-0aed-4882-82be-9796813a4fad/bin/ukojak-verify-1t5iHCbJaC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187fa5d8-0aed-4882-82be-9796813a4fad/bin/ukojak-verify-1t5iHCbJaC/config/KojakReach.xml -i ../../sv-benchmarks/c/float-benchs/interpolation2.c.p+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187fa5d8-0aed-4882-82be-9796813a4fad/bin/ukojak-verify-1t5iHCbJaC/config/svcomp-Overflow-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187fa5d8-0aed-4882-82be-9796813a4fad/bin/ukojak-verify-1t5iHCbJaC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5c5b05c4ae88eb6dc9b39e487669b31df0ffdcd18c2998e1a9c5cebc84002587 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:05:14,416 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:05:14,539 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187fa5d8-0aed-4882-82be-9796813a4fad/bin/ukojak-verify-1t5iHCbJaC/config/svcomp-Overflow-32bit-Kojak_Default.epf [2023-11-23 20:05:14,544 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:05:14,545 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-23 20:05:14,574 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:05:14,575 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:05:14,576 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-23 20:05:14,577 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 20:05:14,582 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 20:05:14,584 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:05:14,584 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:05:14,585 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 20:05:14,586 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:05:14,587 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 20:05:14,587 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:05:14,588 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:05:14,588 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:05:14,588 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:05:14,589 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 20:05:14,589 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 20:05:14,590 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 20:05:14,590 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:05:14,591 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:05:14,592 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-23 20:05:14,592 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-23 20:05:14,592 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-23 20:05:14,593 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:05:14,593 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-23 20:05:14,594 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:05:14,595 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:05:14,595 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:05:14,596 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-23 20:05:14,596 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:05:14,596 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:05:14,596 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187fa5d8-0aed-4882-82be-9796813a4fad/bin/ukojak-verify-1t5iHCbJaC/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187fa5d8-0aed-4882-82be-9796813a4fad/bin/ukojak-verify-1t5iHCbJaC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5c5b05c4ae88eb6dc9b39e487669b31df0ffdcd18c2998e1a9c5cebc84002587 [2023-11-23 20:05:14,936 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:05:14,968 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:05:14,971 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:05:14,972 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:05:14,972 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:05:14,974 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187fa5d8-0aed-4882-82be-9796813a4fad/bin/ukojak-verify-1t5iHCbJaC/../../sv-benchmarks/c/float-benchs/interpolation2.c.p+cfa-reducer.c [2023-11-23 20:05:17,930 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:05:18,244 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:05:18,245 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187fa5d8-0aed-4882-82be-9796813a4fad/sv-benchmarks/c/float-benchs/interpolation2.c.p+cfa-reducer.c [2023-11-23 20:05:18,253 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187fa5d8-0aed-4882-82be-9796813a4fad/bin/ukojak-verify-1t5iHCbJaC/data/c06887d40/902ad8e39df2463d8bab8bfdbb04e390/FLAG8b91e07a2 [2023-11-23 20:05:18,269 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187fa5d8-0aed-4882-82be-9796813a4fad/bin/ukojak-verify-1t5iHCbJaC/data/c06887d40/902ad8e39df2463d8bab8bfdbb04e390 [2023-11-23 20:05:18,271 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:05:18,273 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:05:18,275 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:05:18,275 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:05:18,280 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:05:18,281 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:05:18" (1/1) ... [2023-11-23 20:05:18,282 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78d2944c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:05:18, skipping insertion in model container [2023-11-23 20:05:18,283 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:05:18" (1/1) ... [2023-11-23 20:05:18,306 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:05:18,514 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:05:18,526 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:05:18,558 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:05:18,574 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:05:18,574 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:05:18 WrapperNode [2023-11-23 20:05:18,575 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:05:18,576 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:05:18,576 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:05:18,577 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:05:18,585 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:05:18" (1/1) ... [2023-11-23 20:05:18,595 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:05:18" (1/1) ... [2023-11-23 20:05:18,635 INFO L138 Inliner]: procedures = 18, calls = 56, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 136 [2023-11-23 20:05:18,636 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:05:18,637 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:05:18,637 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:05:18,637 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:05:18,646 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:05:18" (1/1) ... [2023-11-23 20:05:18,647 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:05:18" (1/1) ... [2023-11-23 20:05:18,655 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:05:18" (1/1) ... [2023-11-23 20:05:18,655 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:05:18" (1/1) ... [2023-11-23 20:05:18,663 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:05:18" (1/1) ... [2023-11-23 20:05:18,665 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:05:18" (1/1) ... [2023-11-23 20:05:18,667 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:05:18" (1/1) ... [2023-11-23 20:05:18,668 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:05:18" (1/1) ... [2023-11-23 20:05:18,671 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:05:18,672 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:05:18,672 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:05:18,672 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:05:18,673 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:05:18" (1/1) ... [2023-11-23 20:05:18,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-23 20:05:18,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187fa5d8-0aed-4882-82be-9796813a4fad/bin/ukojak-verify-1t5iHCbJaC/z3 [2023-11-23 20:05:18,707 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187fa5d8-0aed-4882-82be-9796813a4fad/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-23 20:05:18,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187fa5d8-0aed-4882-82be-9796813a4fad/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-23 20:05:18,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:05:18,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 20:05:18,753 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 20:05:18,753 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-11-23 20:05:18,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:05:18,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:05:18,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2023-11-23 20:05:18,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 20:05:18,851 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:05:18,854 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:05:19,120 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:05:19,152 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:05:19,153 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 20:05:19,155 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:05:19 BoogieIcfgContainer [2023-11-23 20:05:19,155 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:05:19,156 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-23 20:05:19,156 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-23 20:05:19,167 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-23 20:05:19,168 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:05:19" (1/1) ... [2023-11-23 20:05:19,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:05:19,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:05:19,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 18 states and 24 transitions. [2023-11-23 20:05:19,241 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 24 transitions. [2023-11-23 20:05:19,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-23 20:05:19,244 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:05:19,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:05:19,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:05:19,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:05:19,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:05:19,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 21 states and 29 transitions. [2023-11-23 20:05:19,676 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 29 transitions. [2023-11-23 20:05:19,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-23 20:05:19,677 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:05:19,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:05:19,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:05:19,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:05:19,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:05:19,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 22 states and 30 transitions. [2023-11-23 20:05:19,815 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 30 transitions. [2023-11-23 20:05:19,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-23 20:05:19,816 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:05:19,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:05:19,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:05:19,973 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:05:20,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:05:20,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 25 states and 36 transitions. [2023-11-23 20:05:20,072 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 36 transitions. [2023-11-23 20:05:20,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-23 20:05:20,080 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:05:20,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:05:20,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:05:20,184 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:05:20,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:05:20,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 29 states and 41 transitions. [2023-11-23 20:05:20,297 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 41 transitions. [2023-11-23 20:05:20,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-23 20:05:20,299 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:05:20,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:05:20,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:05:20,463 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-23 20:05:20,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:05:20,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 26 states and 36 transitions. [2023-11-23 20:05:20,610 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 36 transitions. [2023-11-23 20:05:20,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-23 20:05:20,610 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:05:20,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:05:20,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:05:20,732 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:05:20,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:05:20,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 30 states and 41 transitions. [2023-11-23 20:05:20,853 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 41 transitions. [2023-11-23 20:05:20,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-23 20:05:20,854 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:05:20,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:05:20,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:05:21,028 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:05:21,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:05:21,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 34 states and 46 transitions. [2023-11-23 20:05:21,128 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 46 transitions. [2023-11-23 20:05:21,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-23 20:05:21,130 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:05:21,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:05:21,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:05:21,287 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:05:21,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:05:21,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 38 states and 51 transitions. [2023-11-23 20:05:21,389 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 51 transitions. [2023-11-23 20:05:21,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-23 20:05:21,391 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:05:21,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:05:21,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:05:21,541 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:05:21,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:05:21,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 34 states and 45 transitions. [2023-11-23 20:05:21,646 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 45 transitions. [2023-11-23 20:05:21,649 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-23 20:05:21,649 WARN L420 CodeCheckObserver]: This Program is SAFE, Check terminated with 10 iterations. [2023-11-23 20:05:21,662 INFO L751 CodeCheckObserver]: All specifications hold 2 specifications checked. All of them hold [2023-11-23 20:05:21,832 INFO L560 CodeCheckObserver]: Invariant with dag size 1 [2023-11-23 20:05:21,837 INFO L560 CodeCheckObserver]: Invariant with dag size 1 [2023-11-23 20:05:21,837 INFO L560 CodeCheckObserver]: Invariant with dag size 28 [2023-11-23 20:05:21,842 INFO L560 CodeCheckObserver]: Invariant with dag size 1 [2023-11-23 20:05:21,842 INFO L560 CodeCheckObserver]: Invariant with dag size 1 [2023-11-23 20:05:21,842 INFO L560 CodeCheckObserver]: Invariant with dag size 1 [2023-11-23 20:05:21,842 INFO L560 CodeCheckObserver]: Invariant with dag size 1 [2023-11-23 20:05:21,843 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 23.11 08:05:21 ImpRootNode [2023-11-23 20:05:21,843 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-23 20:05:21,844 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 20:05:21,844 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 20:05:21,844 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 20:05:21,844 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:05:19" (3/4) ... [2023-11-23 20:05:21,847 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-23 20:05:21,855 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2023-11-23 20:05:21,856 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-23 20:05:21,856 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-23 20:05:21,857 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-23 20:05:21,984 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187fa5d8-0aed-4882-82be-9796813a4fad/bin/ukojak-verify-1t5iHCbJaC/witness.graphml [2023-11-23 20:05:21,984 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187fa5d8-0aed-4882-82be-9796813a4fad/bin/ukojak-verify-1t5iHCbJaC/witness.yml [2023-11-23 20:05:21,985 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 20:05:21,985 INFO L158 Benchmark]: Toolchain (without parser) took 3712.27ms. Allocated memory was 117.4MB in the beginning and 146.8MB in the end (delta: 29.4MB). Free memory was 87.3MB in the beginning and 116.6MB in the end (delta: -29.2MB). Peak memory consumption was 77.7MB. Max. memory is 16.1GB. [2023-11-23 20:05:21,986 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 117.4MB. Free memory is still 74.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:05:21,986 INFO L158 Benchmark]: CACSL2BoogieTranslator took 300.66ms. Allocated memory is still 117.4MB. Free memory was 87.3MB in the beginning and 76.3MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-23 20:05:21,987 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.95ms. Allocated memory is still 117.4MB. Free memory was 76.3MB in the beginning and 74.1MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:05:21,987 INFO L158 Benchmark]: Boogie Preprocessor took 34.27ms. Allocated memory is still 117.4MB. Free memory was 74.1MB in the beginning and 72.8MB in the end (delta: 1.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 20:05:21,988 INFO L158 Benchmark]: RCFGBuilder took 483.47ms. Allocated memory is still 117.4MB. Free memory was 72.5MB in the beginning and 59.0MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-23 20:05:21,988 INFO L158 Benchmark]: CodeCheck took 2687.24ms. Allocated memory was 117.4MB in the beginning and 146.8MB in the end (delta: 29.4MB). Free memory was 59.0MB in the beginning and 44.1MB in the end (delta: 15.0MB). Peak memory consumption was 44.3MB. Max. memory is 16.1GB. [2023-11-23 20:05:21,989 INFO L158 Benchmark]: Witness Printer took 141.13ms. Allocated memory is still 146.8MB. Free memory was 44.1MB in the beginning and 116.6MB in the end (delta: -72.5MB). Peak memory consumption was 6.2MB. Max. memory is 16.1GB. [2023-11-23 20:05:21,991 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 1 procedures, 18 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 2.5s, OverallIterations: 10, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 322 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 201 mSDsluCounter, 285 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 130 mSDsCounter, 168 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 556 IncrementalHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 168 mSolverCounterUnsat, 155 mSDtfsCounter, 556 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1067 GetRequests, 991 SyntacticMatches, 40 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 567 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 141 NumberOfCodeBlocks, 141 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 132 ConstructedInterpolants, 0 QuantifiedInterpolants, 336 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 10/153 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - PositiveResult [Line: 76]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 76]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: (((((((3 < main__i) && (main__i <= 4)) || ((main__i <= 1) && (1 <= main__i))) || ((main__i <= 3) && (2 < main__i))) || ((1 < main__i) && (main__i <= 2))) || ((main__i <= 5) && (4 < main__i))) || ((main__i < 1) && (0 <= (main__i + 2147483648)))) - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: 1 * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 117.4MB. Free memory is still 74.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 300.66ms. Allocated memory is still 117.4MB. Free memory was 87.3MB in the beginning and 76.3MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.95ms. Allocated memory is still 117.4MB. Free memory was 76.3MB in the beginning and 74.1MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 34.27ms. Allocated memory is still 117.4MB. Free memory was 74.1MB in the beginning and 72.8MB in the end (delta: 1.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 483.47ms. Allocated memory is still 117.4MB. Free memory was 72.5MB in the beginning and 59.0MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * CodeCheck took 2687.24ms. Allocated memory was 117.4MB in the beginning and 146.8MB in the end (delta: 29.4MB). Free memory was 59.0MB in the beginning and 44.1MB in the end (delta: 15.0MB). Peak memory consumption was 44.3MB. Max. memory is 16.1GB. * Witness Printer took 141.13ms. Allocated memory is still 146.8MB. Free memory was 44.1MB in the beginning and 116.6MB in the end (delta: -72.5MB). Peak memory consumption was 6.2MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be correct! [2023-11-23 20:05:22,032 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187fa5d8-0aed-4882-82be-9796813a4fad/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE